Grease cup



'A 1, 4, June 28,1927. K. D' MONTGOMERY 63 112 GREASE CUP Filed Julyl',1926 Patented June 28, 1927.

UNITED STATES llil C 'GREASE CUP. f

Application lcd 311157.17,

In the manufacti-i-re of grease cups itis customary to employ, in therear of the plunger, a spring which contributes to effect the forward orfeeding movement ofthe plunger. In the use of a grease cup of thischaracter, the spring oftentimes gets out of alignment which causes theplunger to bind.

The object of this invention is'` to devise a novel grease cup inY whicha. novel plunger construct-ion is employed which embodies novel means tomaintain the proper align-v ment of the springs. s Q

IVith the above and other objects in view as will hereinafter moreclearly appear, my invention comprehends a novel grease cup having novelmeans for aligning the spring.

Other novel features of construction and advantage will hereinafter moreclearly appear in the detailed description and the appended claims.

For the purpose of illustrating` the invention, I have shown in theaccompanying drawing a typical embodiment of it, which, in practice,will give reliable and satisfactory results. It is, however, to beunderstood that this embodiment is typical only and that the variousinstrumentalities of which my invention consists can be variouslyarranged and organized, and the invention is not, therefore, limited tothe precise arrangement and organization of these instrumentalities asherein set forth.

Figure 1 is a front elevation of a grease cup embodying my invention. Y

Figure 2 is a section on line 2 2 of Figure 1. K

Figure 3 is a perspective view of the plunger and spring.

Similar numerals of reference indicate corresponding parts. y

Referring to the drawings The grease cup is provided with a chamberedbody portion 1, having an externally threaded discharge outlet 2, andinternally threaded at its opposite end as at 3 in order to adapt it toreceive the conventional externally threaded cap 4, which latter isprovided with a lock nut 5. Vithin the cap a plunger 6 is slidablymounted. This plunger 6 consists of a cup shaped washer .7 within whichis positioned a disc 8 preferably of metal.

In rear of the Vcup shapedwasher is ak disc 9 preferabl 7 of metalhaving a rearwardly extending annular flange 10 from which ex-v tendrearwardly the spaced guide members not have a 192e.4 serial No.123,024.

11 which serve to retain in proper alignment spring 12. y The forward C.the spring 12 is fixed relatively to the disc 9 by means of clips 13provided from the "Piange l0 and bent laterally and rorwardly to embracethe forward egidof such spring. lil is a fasteningl device in the form,illustrated,v of ascrew `and inittiie screw passing through the disc 8,the washer 10 e d the'disc 9. It will thus be seen that the 'pl gerforms a unit of structure witlithe-.sp ig asthe forward.V end of thespring is iii.c to the plunger.

When the grease cup is to be filled, the cap is unscrewed from the bodyportion and the body portion is Jlled with the grease or otherlubricant. The cap with the plunger wit-hin it is then assembled withthe body portion. Air will be trapped in the cap in rear of the plungerand the air and the spring contribute to advance the plunger to eiectthe feed of the lubricant. is the lubricant is used, the cap is, fromtime to time, advanced on the body portion and the lock nut tightened.

The spring-is maintained, its proper alignment with the plui i, theguide members prevent the spring at a l times, in r, and from Gettin@`out of alignment.

'It will be understood from the foregoing that in accordance with mypresent invention, I employ a washer or gasket slidable within thecapand provided with reinforcing means having portions deflected to formclips to engage the forward Iend of the spring and having guide men bersexterior of the spring and extending rearwardly to maintain the properalignment of the spi g and plunger within the cap.

The outer or rear end of the springy is seated within the rear end ofthe chamber within the cap. It will bc apparent that in my presentinvention I have devised a simple and economical construction whichmaintains the spring ai all times in proper alignment with the plungerso thata r ctilinear movement of the plunger will take place within thecap and tendency to cause the plunger bindV within the cap.

t will now be apparent that I have Vdevised a new and useful greaseembodies the features of advantage enu` merated as desirable in thestatement of the invention and the above description,and that while Ihave, in the present instance.

cup which the spring does s shown and described a preferred embodimentthereof ,which will give in practice satisfactory and reliable results,it is to be understood that this embodiment is susceptible or'modification in various particulars Without departing from the spirit orscope of the invention or sacrificing any or' its advantages.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent, is

l. In a grease cup, a chainbered body p0rtion having a discharge outlet,a cap in threaded -engagement with said body portion, a plunger withinsaid cap and a spring connected at its forward end to said plunger, saidplunger, having formed from it rearwardly extending spaced guide membersto maintain alignment of said spring.

2. In a grease cup, a chambered body portion having a discharge outlet,a cap in threaded engagement with said body portion, a plunger includinga Washer slidable Within said cap, a disc iiXed With respect to saidWasller and having formed from it rearwardly extending guide members,and a spring having its forward end fixed to said disc and aligned bysaid guide` meinbers.

3. In a grease cup, a chambered body portion having a discharge outlet,a cap in threaded engagement. with said body portion, a spring havingits rear end seated in said cap, a plunger including a washer slidableWithin said cap, and reinforcing means' for said Washer comprising adisc having portions deiiected to form clips to engage the forward endof said 'sp1-ing, and having guide spaced members exterior oit' thespring to maintain its alignment in said cap.

KNOWLTON D. MONTGOMERY.

